Thread guide advancing device for bobbin winding machines



Jan. 17, 1933. A, HOFFMANN v 1 ,s94,313

THREAD GUIDE ADVANCING DEVICE FOR BOBBIN WINDING MACHINES Filed May 2.1931 Patented Jan. 17, 1933 UNITED STATES AUGUST HOFFMANN, F LEIPZIG,GERMANY THREAD GUIDE ADVANCING DEVICE FOR BOBBIN' WINDING- MACHINESApplication filed May 2, 1931, Serial No. 534,669, and in Germany May 3,1930.

This invention relates to a thread guide advancing device for use onbobbin winding and the like machines in which the thread guide, in thedirection of thread travel, is arranged in conjunction with a threadoperated guide pulley or runner, which is adapted intermittently toshift a ratchet wheel for the progressive advance of the thread guidecarrier by means of a toothed gear.

In the known devices of the said type it is necessary to keep theadvancing gear in constant motion during the action of winding. It isrequired, therefore, when changing to threads of a different thickness,to carry out troublesome alterations or adjustments in the said gear,particularly in devices in which the progressive advance of the threadguide carrier is effect-ed by means of pegs or pins fixed on a gearwheel and adapted to engage with a ratchet wheel. In this case everychange of thread requires alterations either in the number of pegs or inthe diameter of the guiding pulley. A further drawback exists in thefact of the thread being constantly strained owing to its having to keepthe gear in permanent motion. 7

Other bobbin winding devices may be used for the winding of thin orthick thread without any changes having to be carried out, but thesedevices are deficient in that the spindle for the movement of thethread. guide carrier 'must be maintained in constant rotation by aspecial gear provided for the purpose. In these devices the advance ofthe thread guide carrier is effected by means of an element, which istemporarily restrained in its motion by means of a diverting feeleractuated by the movement of the thread from the top of the bobbin to thebase thereof, and which carrier along the screw spindle g.

is caused, thereby, to travel up the screw spinwhich the disadvantagesenumerated shall be absent. 1

With this and other objects in view the invention consists in socombining the thread guide with the shaft of the guide pulley and "5 thetoothed gear as to allow of simultaneous swinging movement in such amanner, as to cause the actuation of the toothed gear on the diversionof the thread guide when the latter J runs the thread up the base of thebobbin. 0 The accompanying drawing illustrates the invention by way ofexample. Fig. l is a side elevation of the thread guide advancingmechanism and Fig. 2 a plan view corresponding thereto. In this drawingthe thread guide a has rigidly attached to it the turning'pin b which isjournaled in an arm cl of the thread guide carrier is which, on itspart, is adjustable on the screw spindle 9. 71 The turning pin b is alsorigidly connected with the bearing hof the shaft 2' to the one end ofwhich latter the thread guiding pulley m is attached, whilst its otherend carries a (3 driving worm n. a The screw spindle g, which in knownmannermoves regularly up and down in front of the bobbin, supports thethread guide carrier k with its advancing gear 0. A pawl 4", on the saidcarrier resiliently engages with '30 the threads of the screw spindle,and it will be apparent, that every rotary movement of the carrier iswill be accompanied by a corresponding up or down movement of the said(L1 A rings is loosely placed over the hub forming the thread guidecarrier, which ring is adapted to support the arm d for the thread guidea and the arm d forming a guide in conjunction with the rod p. i

The ring .9 is secured against axial displacement in any known orconvenient manner, so

that it is forced to partake in the adjustment of the thread guidecarriers k. (j

The new device operates as follows: The

thread which, by the thread guide a is led over the pulley or runner m,causes the shaft i and, therewith, the worm n to rotate. As

soon as the thread runs up the th'ickest'portion of the bobbin, the wormn,bythe divertgear wheel 0, into which resilient rim the teeth of theworm would impress themselves and thereby move the said disc inapproximately the manner described.

What I claim is 1. A cop winding device including a screw threadedreciprocating member arranged to reciprocate in spaced parallel relationto the axis of the cop to be wound, a carrier on said memberreciprocating therewith, means on said carrier engaging the thread onsaid memher, a worm wheel on said carrier, a drive shaft pivoted toswing atright angles to said member and reciprocating therewith, a wormon said drive shaft movable by the swinging movement of said drive shaftinto and out of engagement with the worm wheel, thread controlled meansfor effecting swinging movement of the drive shaft, and thread actuatemeans for driving said drive shaft.

2. A cop winding device including a screw threaded reciprocating memberarranged to reciprocate in spaced parallel relation to the axis of thecop to be wound, a carrier revolubly mounted on said member, a pawlmounted, on the carrier and engaging the thread of the member to effectreciprocation of the carrier with the member, a worm gear carried by thecarrier, a drive shaft pivoted to swing at right angles to said memberand reciprocating therewith, a worm on said drive shaft movable by theswinging movementof the shaft into and out of engagement with the wormwheel, thread controlled means for effecting swinging movement of thedrive shaft, and thread actuated means for driving said drive shaft. v

3. A cop winding device including a screw threaded reciprocating memberarranged to reciprocate in spaced parallel relation to the axis of thecop to be wound, a carrier revolubly mounted on said member, a pawlmounted on the carrier and engaging the thread of the member to eifectreciprocation of the carrier with the member, a worm'gear carried bythecarrier, a ring carried by the carrier, said carrier being revolublewith respectto the ring, means to prevent rotation of the ring, an armprojecting from thering, a bearing. pivoted to the arm with its pivotalaxis parallel to saidmember and its bearing axis at right angles to itsplvotal axis, a drive shaft journalled in said bearing, a worm on said"drive shaft movable by the pivotal'movement of the bearing into and outof engagement with the worm wheel, thread controlled means forefi'ecting pivotal movement of the bearing, and thread actuated meansfor driving the drive shaft.

4; A cop winding device including a screw threaded reciprocating memberarranged to reciprocate in spaced parallel relation to the axis of thecop to be wound, a carrier revolubly mounted on said member, a pawlmounted on the carrier and engaging the thread of the member to effectreciprocation of the carrier with the member, a worm gear carried by thecarrier, a ring carried by the carrier, said carrier being revolublewith respect to the ring, means to prevent'rotation of the ring, an armprojecting from the ring, a

bearing pivoted to the arm with its pivotal axis parallel to said memberand its bearing axis at right angles to its pivotal axis, a drive shaftournalled lnsald bear1ng,'a worm on said drive shaft movable by thepivotal movement of the bearing into and out of engageme'ntwith the wormwheel, a guide arm connected to the bearing to cause movement of thebearing on its pivot, a thread guide on the end of said arm, and athread pulley on said drive shaft arranged to be engaged by threadpassing through said guide.

In testimony whereof I affix my signature AUGUST HOFFMANN.

